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Finding the Fourth Proportional to 129,059.20, 193,734.60 and 99,607.60

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Solution

The fourth proportional to 129,059.20, 193,734.60 and 99,607.60 is: 149,523.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,059.20 : 193,734.60 = 99,607.60 : x
  2. Step 2: Convert to fraction form
    129,059.20/193,734.60 = 99,607.60/x
  3. Step 3: Cross multiply
    129,059.20x = 193,734.60 × 99,607.60
  4. Step 4: Simplify right side
    129,059.20x = 19,297,438,542.96
  5. Step 5: Solve for x
    x = 19,297,438,542.96/129,059.20
  6. Step 6: Final answer
    x = 149,523.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.